Improvement in plows



J. B. MOORE.

Plow. No. 3,352. Patented Nov. 24. l843 U ITED STATES PATENT OFFICE.

JAMES B. MOORE, OF WILMINGTON, DELAWARE.

IMPROVEMENTIN PLOWS.

Specification forming part of Letters Patent No. 3,352, dated November24, 1843.

To all whom it may concern:

Be-it known that I, JAMES B. MooRE, of Wilmington, in the county of NewCastle and State of Delaware, .have invented a new and usefulImprovement in the Construction of Self- SharpeningPlows; andIdoherebydeclare that the following isa full, clear, and exact descriptionthereof, reference being had to the accom panyingdrawings, which forms apart of this specification, in which- Figure l is a perspective viewoftheplow; Fig. 2, mold-board detached from beam and handles 5 Fig. 3,inside of mold-board; Fig. 4, inside of upper plateof landside; Fig. 5,cutter or colter, showing both sides; Figs. 6 and 6, both sides ofinside plate of the landside Fig. 7,the sheardetached; Fig. 8,doublepoint.

The nature of my invention consists in the peculiar construction ofthelandside and cutter and the adaptation of the other parts thereto.

The construction of my plow is as follows The mold-board is formedsimilar to those of some plows now in use, the front part on the insidebeing straight from the bottom nearly to the top, where it terminates inthe usual brace, by which it is bolted'to the beam. In this straightpart there is a recess (see K Fig. 3) from the bottom nearly two-thirdsits height, and at the top of the straight part above named there is aprojection, a, backward, that is rabbeted on its lower edge, into whichthe upper outside plate of the landside, hereinafter described, fits.The recess K has two holes, 00, through to the face for receiving boltsto fasten the cutter and landside to it. There are two other holes belowthese, more plainly shown in Fig. 2, the frontone ot'which serves tobolt the point on, by the other the share.

The share is a triangular plate, Fig. 7, the cutting-edge of which isconvex. Near the angle formed by the other two sides there is a hole,as, for receiving the bolt by which it is fastened to the mold-board,and as both ends are shaped alike, it can be turned with eitherforemost.

The point, Fig. 8, is made doub1e ,or having a point at each, like manypoints now in use, that are made to turn end for end. This has twoormore holes in the shank, by which it is fastened on.

The landside is composed of three plates, one

of which is shown at Figs. 6, 6. It is straight on the lower edge, andthe front edge forms an angle with it. .The inner face at the front, orthat which comes next to the mold-board,has a projection, is, on itthatjust fits the recess K in the mold-board, and has two holes through itcorresponding with those in the mold-board. From the top ot'theprojection 70 above named the plate is cut out-ina curvilinear form,risin g again behind, where there is a recess for the left handle, justbelow which there is a slot, h, through it, and under it, a rib, onwhich the end of the handle rests. At the lower front corner a groove iscutto receive the shank of the point. On the other side of this plate,in front, it is straight for about the same distance back as the widthof the projection on the other side, and recedes from the rest of theface, but is on a line parallelwith it. Behind this there is a recess,1), just the form to receive the edge of the cutter, hereinafterdescribed. The rest of the face is straight. This forms the inside plateof the landside, to which the others are titted.

The cutter is of a form nearly corresponding to a rhomboid, the longestsides being convex and beveled off on the mold-board side to the properedge. Either of the edges may be placed foremost by turning the plateupside down.

The part Z, that projects beyond the moldboard and landside, has ashoulder that fits against them, the shank or part connecting the twoedges being made thinner, and havingtwo large holes, d and c, Fig. 5,through it, into which bosses on the outer landside-plates fit. This isput onto the inner landside-plate above described, the cutting-edge thatis turned in fitting the recess b in said plate.

The outer landside-plates, E and D, Fig. 1, the inside being shown inFig. 4, are formed as follows: Thelower one is an an oblongpiece,somewhat narrowest in front, from which projects up near the front end apiece, g, of acircular form, and standing a little inward about thethickness of the shank of the cutter. This boss 9 enters the lower holein said cutter, and on its opposite side it has a concavity whichmakes'it cup-formed. Through the center is a hole which comes oppositethat in the mold board. Back of the boss the inside of this pin isrecessed, u, enough to receive the lower end of the cutter L. The loweredge has aflange on it, that runs under the inner landside-plate, whichflange also extends up around the back end of said plate; The upperplate, E, isstraight on its lower edge and fits onto the lower one. Itsfront side is slightly concave. and fits closely, the shoulder of thecutter L. It extends up to the projection a on the moldboard and fitsinto the rabbet on its lower edge. From this it curves down and backwarda little beyond its center, and then turns upward again, the curve beingsomewhat elliptical. It then runs back horizontally wide enough forforming the support to the handle, from whence it curves down totheloweredge, forming an obtuse angle therewith. Near the front lowercornera circular groove,f, is cut out on the inner face, to admit thecup-shaped boss 9 on the lower plate, and above this is a boss, 0",projecting out, which,when in place, fills the upper hole in the cutter.A hole is made through the center of each of these opposite those in themold-board, through both of which a bolt passes, having a countersunkscrew on the landside at the proper distance behind the holes. There isa recess, t, which is acontinuation of the one marked u in the lowerplate, to receive and fit the cutter L, which is turned in, thuscompletely incasing every part of the cutter except that part that isprojected beyond the front edge of mold-board and landside. From therecess t to the recess u for the handle there is a curved projection, q,that fits over the upper edge of the inner plate, which plate rises upabove the lower edge of the plate E and hplds the landside firmlytogether.

The three plates are bound together behind by the handle in thefollowing way: The upper plate is bolted through to it, and the lowerend of the handle passes down over the inner plate and through a loop,8, which is cast on the lower plate, D, and passes through the slot h inthe inner plate. The point K has a small recess on top, into whichthelower point of the cutter enters.

Having thus fully described my invention, what I claim as my invention,and for which I desire Letters Patent, is-

Thelandside formed of three plates constructed and arranged in themanner and. for the purpose herein described, and in combinationtherewith the double cutter,in the inanner substantially as herein setforth.

- JAMES B. MOORE. Witnesses:

JoNAs I. FAIRLAMB, JOHN S. MARKLEY.

